Transit.git - Ulrich Hilger Code Repository

ulrich

2014-11-16 1da1cadfe51b9fc9970091e0d2ee6bedbcfd859b

commit \| author \| age
ca8e1e	1	/*
U	2	Transit - Remote procedure calls made simple
	3	Copyright (c) 2012 Ulrich Hilger
	4
	5	This program is free software: you can redistribute it and/or modify
	6	it under the terms of the GNU Affero General Public License as published by
	7	the Free Software Foundation, either version 3 of the License, or
	8	(at your option) any later version.
	9
	10	This program is distributed in the hope that it will be useful,
	11	but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	GNU Affero General Public License for more details.
	14
	15	You should have received a copy of the GNU Affero General Public License
	16	along with this program. If not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	package de.uhilger.transit.web;
	20
	21	import java.io.File;
	22	import java.util.logging.FileHandler;
	23	import java.util.logging.Handler;
	24	import java.util.logging.Level;
	25	import java.util.logging.Logger;
	26
	27	import javax.servlet.ServletContext;
	28	import javax.servlet.ServletContextEvent;
	29	import javax.servlet.ServletContextListener;
	30
	31	import de.uhilger.transit.TextLogFormatter;
	32
	33	/**
	34	* Die Klasse WebApp kann von webanwendungen als Basisklasse verwendet
	35	* werden. Sie etabliert Dinge, die von einer Webanwendung zentral
	36	* benoetigt werden wie z.B. Protokollierung
	37	*
	38	* Die Klasse WebApp implementiert die Schnittstell ServletContextListener.
	39	* Wird sie als Listener im Deployment Descriptor einer Webanwendung eingebunden,
	40	* werden ihre Funktionen zum Start und zum Ende ihrer Laufzeit wirksam.
	41	*/
	42	public class WebApp implements ServletContextListener {
	43
6b1009	44	/*public static final String P_LOGGERNAME = "loggername";
ca8e1e	45	public static final String P_LOGDIRNAME = "logdirname";
U	46	public static final String P_LOGFILENAME = "logfilename";
	47	public static final String P_LOGFILESIZE = "logfilesize";
	48	public static final String P_LOGFILECOUNT = "logfilecount";
6b1009	49	public static final String P_LOGLEVEL = "loglevel";*/
ca8e1e	50
U	51	public static final String P_DEBUG = "debug";
	52
	53	public static final String WEBAPP_LOGGER = "webapplogger";
	54
6b1009	55	/*
ca8e1e	56	private Level getLevel(String levelStr) {
U	57	Level level = Level.INFO;
	58	if(levelStr.equalsIgnoreCase(Level.ALL.getName())) {
	59	level = Level.ALL;
	60	} else if(levelStr.equalsIgnoreCase(Level.CONFIG.getName())) {
	61	level = Level.CONFIG;
	62	} else if(levelStr.equalsIgnoreCase(Level.FINEST.getName())) {
	63	level = Level.FINEST;
	64	} else if(levelStr.equalsIgnoreCase(Level.FINER.getName())) {
	65	level = Level.FINER;
	66	} else if(levelStr.equalsIgnoreCase(Level.FINEST.getName())) {
	67	level = Level.FINE;
	68	} else if(levelStr.equalsIgnoreCase(Level.OFF.getName())) {
	69	level = Level.OFF;
	70	} else if(levelStr.equalsIgnoreCase(Level.SEVERE.getName())) {
	71	level = Level.SEVERE;
	72	} else if(levelStr.equalsIgnoreCase(Level.WARNING.getName())) {
	73	level = Level.WARNING;
	74	}
	75	return level;
	76	}
6b1009	77	*/
ca8e1e	78	public void contextInitialized(ServletContextEvent event) {
U	79	ServletContext servletContext = event.getServletContext();
6b1009	80	/*
ca8e1e	81	Object o = servletContext.getAttribute(WEBAPP_LOGGER);
6b1009	82
ca8e1e	83	if(o == null) {
U	84	String loggername = servletContext.getInitParameter(P_LOGGERNAME); // Name der root Package dieser Anwendung
	85	String logdirname = servletContext.getInitParameter(P_LOGDIRNAME);
	86	String logfilename = servletContext.getInitParameter(P_LOGFILENAME); // etwas wie z.B. "log%g.%u.txt"
	87	String logfilesize = servletContext.getInitParameter(P_LOGFILESIZE); // Anzahl Bytes
	88	String logfilecount = servletContext.getInitParameter(P_LOGFILECOUNT); // Anzahl Dateien fuer Rotation
	89	String loglevel = servletContext.getInitParameter(P_LOGLEVEL);
	90	FileHandler fh;
	91	Logger logger = Logger.getLogger(loggername);
	92	servletContext.setAttribute(WEBAPP_LOGGER, logger);
	93	try {
	94	File basis = new File(this.getClass().getResource("/").toURI());
	95	File catalinaBase = basis.getParentFile().getParentFile().getParentFile().getParentFile();
	96	File f = new File(catalinaBase, logdirname);
	97	if (!f.exists()) {
	98	f.mkdirs();
	99	}
	100	fh = new FileHandler(f.getAbsolutePath() + File.separator + logfilename,
	101	Integer.parseInt(logfilesize), Integer.parseInt(logfilecount), true);
	102	//fh.setLevel(getLevel(loglevel));
	103	fh.setFormatter(new TextLogFormatter());
	104	logger.setLevel(getLevel(loglevel));
	105	logger.addHandler(fh);
	106	logger.finest("logger " + loggername + " erzeugt");
	107	} catch (Exception e) {
	108	logger.log(Level.ALL, e.getMessage(), e);
	109	}
	110	} else {
	111	// logger ist schon da
	112	}
6b1009	113	*/
ca8e1e	114	}
U	115
	116	public void contextDestroyed(ServletContextEvent event) {
	117	ServletContext servletContext = event.getServletContext();
6b1009	118	/*
ca8e1e	119	Object o = servletContext.getAttribute(WEBAPP_LOGGER);
U	120	if(o != null) {
	121	Logger logger = (Logger) o;
	122	Handler[] handlers = logger.getHandlers();
	123	for(int i = 0; i < handlers.length; i++) {
	124	handlers[i].flush(); //
	125	if(handlers[i] instanceof FileHandler) {
	126	((FileHandler) handlers[i]).close();
	127	}
	128	logger.removeHandler(handlers[i]);
	129	}
	130	servletContext.removeAttribute(WEBAPP_LOGGER);
	131	logger = null;
	132	}
6b1009	133	*/
ca8e1e	134	}
U	135
	136	/**
	137	* Den Logger aus dem ServletContext ermitteln.
	138	*/
	139	protected Logger getLogger(ServletContext ctx) {
	140	Logger logger = null;
	141	Object o = ctx.getAttribute(WEBAPP_LOGGER);
	142	if(o != null) {
	143	logger = (Logger) o;
	144	}
	145	return logger;
	146	}
	147	}
	148